x = int(input())
l = [0,1800,1600,1400,1200,1000,800,600,400]
for i in range(1,9):
    if x >= l[i]:
        print(i)
        break x = int(input()) x int(input()) int input() input l = [0,1800,1600,1400,1200,1000,800,600,400] l [0,1800,1600,1400,1200,1000,800,600,400] 0 1800 1600 1400 1200 1000 800 600 400 for i in range(1,9):
    if x >= l[i]:
        print(i)
        break i range(1,9) range 1 9 if x >= l[i]:
        print(i)
        break x >= l[i] x l[i] l i print(i) print i break l = [0,1800,1600,1400,1200,1000,800,600,400] [0,1800,1600,1400,1200,1000,800,600,400] l x = int(input()) int(input()) x
x = int(input())
l = [0,1800,1600,1400,1200,1000,800,600,400]
for i in range(1,9):
    if x >= l[i]:
        print(i)
        break